Effect of ticagrelor with or without aspirin on vein graft outcome 1 year after on-pump and off-pump coronary artery bypass grafting - Zhu, Yunpeng; Xue, Qing; Zhang, Minlu; Hu, Junlong; Liu, Hao; Wang, Rui; Wang, Xiaowei; Han, Lin; Zhao, Qiang (Journal of Thoracic Disease, 2020)